The Characteristic of the coating prepared on magnesium alloy AZ91D by micro-arc oxidization

被引：0
|
作者：
Shang, Wei [1 ]
Wen, Yuqing [1 ]
Qin, Yanyun [1 ]
He, Fang [1 ]
Fang, Jiyun [1 ]
机构：
[1] Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China
来源：
MATERIALS PROCESSING TECHNOLOGY, PTS 1-3 | 2012年 / 418-420卷
关键词：
Magnesium alloy; MAO coating; Characteristic; Corrosion resistance; ELECTROCHEMICAL CORROSION BEHAVIOR; CERAMIC COATINGS; OXIDATION; GROWTH;
D O I：
10.4028/www.scientific.net/AMR.418-420.751
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Micro-arc oxidation coating on AZ91D magnesium alloy is prepared in a NaAlO2-NaOH-montmorillonite-acacia gum electrolyte solution with adaptive electric parameters. The morphologies, composition, phase component of the coatings are analyzed by SEM, EDS and XRD. And CHI600B electrochemistry workstation is employed to investigate the corrosion resistance of the coatings. The results show that the MAO coating has the relatively uniform in thickness. The coating is mainly composed of MgO and MgAl2O4 phases. It provides corrosion protection by acting as a barrier. The MAO coating enhances the corrosion resistance of the magnesium alloy AZ91D to some extent.
引用
收藏
页码：751 / 755
页数：5
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